4.9

M4.9 Earthquake near Mindanao, PhilippinesMarch 29, 2023

2023-03-29 07:41:46 UTC (2023-03-29) · approx. 3:41 PM UTC+8 local

MagnitudeM4.9(mb)
Time07:41 UTC3:41 PM UTC+8
Depth11.6 kmshallow crustal
Coordinates5.953°, 126.328°
Felt byNo felt reports
Status✓ Reviewed by USGS

On March 29, 2023 at 07:41 UTC, a magnitude 4.9 shallow crustal earthquake struck near Mindanao, Philippines, at a depth of 11.6 km and coordinates 5.9533°, 126.3284°. This earthquake was detected by 76 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 369, placing it among routine seismic activity.

Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.

The epicenter is located in Philippines, a region characterized by the Manila Trench and Philippine Trench subduction systems, where the Philippine Sea Plate overrides the Eurasian Plate. The nearest mapped fault system is the Philippine Fault. View all earthquakes in Philippines.

Learn more: Magnitude scale · Aftershock sequences

Map showing earthquake epicenter at 5.95°, 126.33°

Earthquake Details

Magnitude
4.9 mb
Depth
11.6 km
shallow crustal
Location
5.9533°N
126.3284°E

Technical Information

Event ID
us6000k0i9
Event Type
earthquake
Status
✓ Reviewed
Significance
369
Stations Used
76
Azimuthal Gap
76.0°
Min Station Distance
1.336°
RMS Residual
1.08 sec
Last Updated
2023-06-03 22:06:05 UTC

Common Questions

How strong was the magnitude 4.9 earthquake near Mindanao, Philippines?

The magnitude 4.9 earthquake that struck near Mindanao, Philippines on March 29, 2023 at 07:41 UTC had a depth of 11.6 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 5.9533°, 126.3284°, which is near Mindanao, Philippines. View all earthquakes in Philippines.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.

Has Philippines had earthquakes this big before?

The largest recorded earthquake in Philippines was the M8.0 Mindanao earthquake of August 17, 1976. Today's magnitude 4.9 event is significantly smaller than that historical record.

Authoritative source: USGS event page (event ID: us6000k0i9). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, March 29, 2023). M4.9 Earthquake near Mindanao, PhilippinesMarch 29, 2023. Retrieved June 3, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000k0i9/